Instruction:
Question #1. Not many years ago, river linking was a concept but it is becoming a reality in the country. Discuss the advantages of river linking & its possible impact on the environment?
Question #2. Oil spills after result in immediate & long term environmental damage that can last for decades. Discuss the impact of oil spill on marine ecosystem. What are various measures to contain pollution from oil spill?
(Examiner will pay special attention to the candidate's grasp of his/her material, its relevance to the subject chosen, and to his/ her ability to think constructively and to present his/her ideas concisely, logically and effectively).
Question #1. Not many years ago, river linking was a concept but it is becoming a reality in the country. Discuss the advantages of river linking & its possible impact on the environment?
Ans. : River linking project : It envisages the transfer of water from water surplus basins where there is flooding to water deficit basins, where there is water scarcity.
It links rivers by a n/w of reservoirs & canals of water redistribution.
Reality : Polavaram project Godavari-Krishna
Ken-Betwa Project
Proposed : Connecting the Ganga & Mahanadi Basin
Connecting the tributaries of the Ganga with the Sabarmati & Chambal.
Advantage :
Employment increase
Crop production increase – farming income increase
Possible environment impact
Question #2. Oil spills after result in immediate & long term environmental damage that can last for decades. Discuss the impact of oil spill on marine ecosystem. What are various measures to contain pollution from oil spill?
What is oil spill? – release of petroleum products into the environment (ocean, sea) – dew to human activity.
A from of pollutions
Impact
Food production decrease
Some zooplanktons – ingest oil droplets leading to mortality/abnormalities.
Fishes – kills
Kill fish eggs :
It lead to economic impact and livelihood impact
Benthic Organisms – accumulation of contamination
Coral reef
Birds – oil affects feathers of birds – reduce there insulating ability & make than more vulnerable to temperature fluctuation.
Marine mammals – Physical contact of oil with furred mammals usually effect these animals.
Measure to contain
1.Physical recovery – arresting its spread and then using vaccume suckers to remove the oil.
2. Bioremediation – oil eating bacteria
3. Controlled burning (in low wind conduction)
4. Use of dispersants – oil floats because of high surface tension
Dispersants reduce the surface tension oil and water – oil can dilute & settle on ocean floor
But this is harmful as dispersants increase the hydrocarbon levels.
5. Solidifying – Solidifying change state of oil from liquid to solid, semi solid or rubber like
These measures can help us remove oil from marine ecosystem but emphasis should be on prevention of oil spills event for which the roll of shipping industry and oil companies carrying out offshore drilling is important.
To participate in the answer writing program, Register yourself for the test. Copies will be evaluated only for the registered students. Registration will be closed after the scheduled date.
Step 1 (Theme, Details & Its Topics):
Step 2 (Answer Writing):
Note: Answer sheets without the proper guidelines given above will not be accepted for evaluation.
Step 3 (Copy Evaluation): Copies will be evaluated in the next 72 hours of the test date. After evaluation, copies will be uploaded into your account. During the copy evaluation period, doubt clearing and discussion about the theme or topic of the test with respective mentors of the test will be done in the telegram group.
Step 4 (Mentorship): Evaluated copies will be sent to you via mail and also uploaded into your account on the website. After that a mentorship session for the marks improvement with respective faculty will be conducted on the Google Meet, so that students can get a wider perspective of the topics. Here you can discuss your evaluated copies also with the faculty. Top 5 copies of every test will be shared in the telegram group for reference.
Note: Aspirants who have not written the test can also participate in the mentorship session.
For Updates and Mentorship of the session, you will be notified through SMS or Telegram Group.
Note: You have to write your answers on an A4 size sheet leaving margins on both sides based on UPSC pattern. Mention Your Name on 1st page and Page Number on each page. After writing the answer, Click pictures of each page of your answer sheet, merge them all in a single PDF and upload in the Your Answer Copy section of the same question.
Verifying, please be patient.